Secure Embedding of a Robust Imperceptible Watermark in Relational Data

Digital multimedia watermarking technology was suggested in the last decade to embed copyright information in digital objects such images, audio and video. However, the increasing use of relational database systems in many real-life applications created an ever increasing need for watermarking database systems. As a result, watermarking relational database systems is now merging as a research area that deals with the legal issue of copyright protection of database systems. In this paper, the authors proposed an efficient database-watermarking algorithm based on inserting binary image watermarks in non-numeric multi-word attributes of selected database tuples.